Metal detector



FIG. 1 is a top, rear and left side perspective view of a first variant of a metal detector showing a first embodiment of my new design;

FIG. 2 is a top view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a bottom view thereof;

FIG. 6 is a left side view thereof;

FIG. 7 is a right side view thereof;

FIG. 8 is a top, rear and right side perspective view of a second variant of a metal detector showing a second embodiment of my design;

FIG. 9 is a top view of a third variant of a metal detector showing a third embodiment of my design; and,

FIG. 10 is a reduced left side view of the first embodiment of my design illustrating a preferred mounting thereof on the wrist of a user.

The broken line illustration of a hand in FIG. 10 is for illustrative purposes only and forms no part of the claimed design. FIG. 10 shows the article in use. 

The ornamental design for a metal detector, as shown and described. 